The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Vienna you should be able to estimate when it's the best time to plant tropical hibiscus.

Planting Calendar for Tropical Hibiscus

Frost tolerance for tropical hibiscus:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since tropical hibiscus are not cold tolerant you have to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant tropical hibiscus in Vienna is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant tropical hibiscus and expect a good harvest is probably August. If you wait any later than that and your tropical hibiscus may not have a chance to really do well. You can get started a little bit earlier by starting your tropical hibiscus indoors.

Last Frost Date

The average date of last frost is April 15 in Vienna. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Vienna may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Vienna it frosts late in the year after April 15 so make sure that you are ready to cover your tropical hibiscus in the event of a late frost.

USDA Zone Info for Vienna

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Vienna

You may be interested in your other planting guides for Vienna.